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Japan Weekly Snow Roundup #293
Weekly Snow News for Japan, updated 17 December 2025: Siberian cold fuels relentless powder storms, with Hokkaido leading Japan’s mid-winter surge.
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Deer Mountain at 2028 m altitude
Issued by Snow-Forecast.com at: 4 pm (local time) / 17 Dec 2025
Now
Wed 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  | | |  |  | | |  | | | | |  | |
snow shwrs | snow shwrs | snow shwrs | some clouds | some clouds | some clouds | some clouds | light snow | clear | snow shwrs | some clouds | cloudy | some clouds | some clouds | clear | some clouds | cloudy | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | 3 | 1 | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | |
2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 7 | -6 | -10 | -7 | 4 | 6 | 6 | -2 | -7 | -7 | -3 | 1 | 4 | 4 | 5 | 4 | 2 |
min °C | 0 | -14 | -13 | -7 | -6 | 5 | 4 | -8 | -9 | -7 | -7 | 0 | 3 | 3 | 3 | 1 | 0 |
-8 | -30 | -27 | -17 | -12 | -1 | -3 | -18 | -18 | -17 | -16 | -5 | -1 | -2 | -2 | -5 | -5 | |
83 | 86 | 62 | 49 | 55 | 45 | 54 | 80 | 60 | 60 | 39 | 59 | 64 | 59 | 55 | 59 | 57 | |
2000 | 850 | 450 | 700 | 2650 | 3100 | 2700 | 850 | 1200 | 1000 | 950 | 2350 | 3050 | 2900 | 2750 | 2250 | 2450 | |
 | — | — | 7:26 | — | — | 7:26 | — | — | 7:26 | — | — | 7:26 | — | — | 7:28 | — | — |
 | 4:16 | — | — | 4:16 | — | — | 4:17 | — | — | 4:17 | — | — | 4:17 | — | — | 4:19 | — |
Next 0-3 days weather summary:
Mild with light rain (total 2.0mm) on Wed afternoon Becoming colder with a light covering of snow, mostly falling on Wed night. Freeze-thaw conditions (max 7°C on Wed afternoon, min -14°C on Wed night). Winds decreasing (stormy winds from the WNW on Wed night, light winds from the WSW by Thu night).
Next 4-6 days weather summary:
Mostly dry. Freeze-thaw conditions (max 6°C on Tue morning, min -7°C on Sat afternoon). Winds decreasing (strong winds from the WNW on Sat afternoon, light winds from the SW by Sun morning).
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Snow Radar
Latest snow reports near Deer Mountain:
Deer Mountain Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 13 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in USA - South Dakota are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
0.6 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.4 | Powder days Fresh snow, limited sun, any wind. |
2.6 | Bluebird days Average snow, mostly sunny, light wind. |
Deer Mountain Forecast Snowfall
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Other resorts in USA - South Dakota are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Deer Mountain at the specific elevation of 2028 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Deer Mountain. To access the weather forecasts for the other elevations, use the tab navigation above the table. For a wider view of the weather, check out the Weather Map of United States.
Click here to read further information on freezing levels and how we forecast our temperatures.
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